Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events (Details)

v3.8.0.1
Subsequent Events (Details) - USD ($)
Nov. 13, 2017
Nov. 12, 2017
Nov. 02, 2017
Sep. 30, 2017
Sep. 27, 2017
Aug. 28, 2017
May 25, 2017
Feb. 24, 2017
Dec. 01, 2016
Oct. 07, 2016
May 27, 2016
Feb. 29, 2016
Nov. 25, 2015
Subsequent Event [Line Items]                          
Dividends paid (usd per share)         $ 0.08   $ 0.08 $ 0.08 $ 0.07 $ 0.07 $ 0.07 $ 0.07 $ 0.05
Subsequent Event                          
Subsequent Event [Line Items]                          
Dividend declared (usd per share)     $ 0.08                    
Dividend payable, maximum, percentage 35.00%                        
Credit facility, minimum required tangible net worth $ 47,500,000 $ 38,900,000                      
Goldline, LLC                          
Subsequent Event [Line Items]                          
Purchase price           $ 10,000,000              
Liabilities incurred for the acquisition           7,500,000              
Escrow deposit       $ 0   $ 1,500,000              
Goldline, LLC | Loans Payable                          
Subsequent Event [Line Items]                          
Stated interest rate (in percentage)           8.50%              
Debt instrument, additional interest, percentage of total principal (in percentage)           3.00%              
Debt instrument, additional interest, percentage of cumulative three year EBITDA (in percentage)           10.00%              
Debt instrument, additional interest, percentage of cumulative three year EBITDA, amount           $ 10,000,000              
Debt instrument, term (years)           3 years